diff --git a/src/AbstractImage.cpp b/src/AbstractImage.cpp
index 3cc19a3a2..681a62e91 100644
--- a/src/AbstractImage.cpp
+++ b/src/AbstractImage.cpp
@@ -119,6 +119,7 @@ std::size_t AbstractImage::pixelSize(Format format, Type type) {
     return 0;
 }
 
+#ifndef DOXYGEN_GENERATING_OUTPUT
 Debug operator<<(Debug debug, AbstractImage::Format value) {
     switch(value) {
         #define _c(value) case AbstractImage::Format::value: return debug << "AbstractImage::Format::" #value;
@@ -201,5 +202,6 @@ Debug operator<<(Debug debug, AbstractImage::Type value) {
 
     return debug << "AbstractImage::Type::(invalid)";
 }
+#endif
 
 }
diff --git a/src/Mesh.h b/src/Mesh.h
index 02b60c9ea..f33b95cbf 100644
--- a/src/Mesh.h
+++ b/src/Mesh.h
@@ -588,8 +588,9 @@ class MAGNUM_EXPORT Mesh {
          *          mesh->vertexCount(), Shaders::PhongShader::Normal());
          * @endcode
          *
-         * @attention Non-zero vertex count must be set before calling this
-         *      function.
+         * @attention The actual vertex count must be set before calling this
+         *      function, otherwise vertex data positions in the buffer will
+         *      be miscalculated.
          * @attention The buffer passed as parameter is not managed by the
          *      mesh, you must ensure it will exist for whole lifetime of the
          *      mesh and delete it afterwards.